The DP400-RD24 call unit is designed to work as part of the ELTIS 400 intercom system and provides selector communication with the number of subscribers from 1 to 100, as well as authorised access to offices, entrances, stairwells and flats of residential buildings or other objects of installation and is a specialised microcontroller device. The call unit has an inbuilt contactless Proximity reader of electronic keys of EM-Marine standard
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